Improvement in oil-stone holders



E.IC. Wi HULL. Oil-Stone Holders.

Patented Feb. 24. 1874.

No.l47,842.

S e S s e .n .n W

Attorneys.

UNITED STATES PATENT OFFICE.

EZEA o. w. HULL, oE HoosIoK EALLs, NEW YORK.

IMPROVEMNT IN OIL-STONE HOLDERS.

Speciticnton forming part of Letters Patent No. 147,842, dated February 24, 1874; application filed June 2l, 1873.

To all ywhom L may concern Be it known that I, EZRA C. IV. HULL, of Hoosick Falls, in the county of Rensselaer and State of New York, have invented a n ew and useful Improvement in Rotary Oil-Stone Holders, of which the followingI is a specication:

The object of this invention is to furnish a convenient apparatus for holding and protecting oil-stones; and it consists in a rotating holder, and a casin g and stop-bolt in combination therewithconstructed as hereinafter described.

In the drawing, Figure l is a sectional side View of the entire apparatus. Fig. 2 is a crosssection ot' Fig. l, taken on thc. line fr.

Similar letters of reference indicate corresponding parts.

A is a cylindrical holder, of irregular form, which is rotated on a central shaft, B, the ends of which. are journals, as seen in the drawing'. This cylinder has three (more or less) faces, U, upon which the oil-stones rest. D represents the oil-stones. The under sides of the faces C are provided with ratchet-teeth E, and

the stones are secured on the faces by means of clamps F, at one or bot-h ends, and screws Gr. The clamps are made adjustable by means of the ratchetteeth, so that stones of diii'ercnt lengths may be held by them. Either one or both clamps have a screw, G, for tightening the stone when the clamp ispproperly adjusted. rlhe cylinder is held in position by means of the spring-bolt H, operated by the knob I, which passes through the head J of the cas ing. The end of this stop-bolt engages with the slats K of the langeL of the holder, and

Yholds the latter, as seenin Fig. 2. The cylin` der may be supported by means of a stand at each end; but I prefer to incase it, with the stones, in a tight case, M, made of cast or sheet metal, or of any suitable material, in two parts, N being the supporting part, and O the cover, which is hinged to N, as seen at D, and fastened on the opposite side by the hasp Q. Vhen the stones are not in use, this case excludes the dust and protects the stones from injury. R is a strap on top ot' the cover, for giving edge to the tool after being sharpened on the stone.

It will be seen that, by making the cylinder to hold two or more stones, the stones may be of different degrees of ineness, which. is, a great convenience in sharpeningtools.

Having thus described my invention, I claim as new and desire to secure by Letters Patcnt-- An oil-stone holder made to revolve on pivots or journals, and having three (more or less) faces, C, with adjustable clamps and screws for securing the oil-stones, substantially as shown and described.

EZRA C. NV. HULL. Witnesses:

JAMEs WALDELL, HORACE H. BARNES. 

